Automatic stove-damper.



N0. 827,955. PATENTED AUG. 7, 1906.

I W. R. BOND. AUTOMATIC STOVE DAMPER.

APPLICATION FILED APILM, 1906.

2 SHEETS-SHEET 1.

mine-938s: I'n'ue tW N0 8 27,955. IVPATENTYED AUG. 7, 1906.

w. R. BOND. AUTOMATIC STOVE DAMPER.

APPLICATION FILED APR. 24, 1905;

2 SHEETSSHEET 2.

In'ventor Attarnegn t'nes ses: fimw WILLIAM R. BOND, OF FORT THOMAS,KENTUCKY.

AUTQMATIG STOVE-DAMPER.

no. saigeae.

fipecification of Letters Patent.

Patented Aug. 7, 1906.

Application filed April 24, 1906. Serial No. 257,108.

1'0 aZL wimm (Jr'- may concern:

Be it known that I, Wrruan R. BOND, a citizen of the United States,residing at Fort Thomas, in the county of Campbell and State ofKentucky, have invented certain new-and useful Improvements in Automatic"Stove ldampers, of which tthe following is a specification. i

The object of my invention is to provide simple, efiective, andeconomical means for automatically regulating the temperature of astove.

My invention consists of ,a pivoted arm mounted upon a support securedto the stove, a spring interposed between said pivoted arm and support,a fiilcrum-secured adjacent to the stove substantially independent ofthe T is a plan view of my device.

contraction and expansion thereof and attached to said arm between thespring and the pivot securing the arm to the support, a

damper in the pipe and in the stove, each attached to said pivoted armand adapted to be moved thereby, means for closing said dampers, anadjustable sleeve or ga e for regulating the temperature, anda die. andpointer for indicating the desired temperature.

My invention also consists in parts and in the combination andarrangement of parts as set forth and claimed herein.

In the drawings, Figure 1 is a side elevation of a heating-stove, partlyin section, showing my invention applied thereto. Fig. 2 is a planview/she pipe-damper being omitted. Fig. 3 is a side elevation, partlyin section, showing the top portion of the stove with my inventionapplied thereto. Fig. 4 Fig. 5 is a plan view of a portion of the devicewith the dial .and pointer removed. Fig. 6 is a rear view 40 of thedevice. Fig. '7 is a front view of the pipe-damper. Fi 8 is an enlargedside view of the pipe-damper lever. Fig. 9 is a front View oi'- thesame. Fig. 10 is a rear view showing a modified construction of thopipe-damper. Fig. 11 is a vertical section on thcline a: a: of Fig. 10.Fig. 12 is an enlarged plan view showing the auxiliary damperillustrated in Fig. 3. Fig. 13 is a vertical section of the same on theline y y of Fig. 12. F ig. 14 shows the auxiliary damper open.

i prefer to construct my automatic stovedamper substantially as follows:An arm 1, preferably formed in the shape of a collar adapted to surroundthe stovepipe 2, is attachcd to a support 3 by a pivot l, the supportbeing suitably secured to the stove 5.

A spring 6 is interposed between said support and arm to support thefree end of the arm 1- and the sleeve 8. A standard 7, secured to oradjacent the stove substantially independ entof the contraction andexpansion unrest; is connected to the arm 1 by means 0 a sleeve 8,attached by pivots 9, forming a fulcrum for the arm 1. The upwardmovement of the sleeve is limited by means of the gage 10, and" thesleeve is normally held from downward movement by the spring 6, but willyield to permit downward movement thereof when the pivot 4 is raised bythe expansion of the stove. The stove-damper 11 and pipe-damper 12 areeach attached to the free end of tliearm 1 and operated thereby. Thefires end of the arm 1 is preferably connected to the stove-dampcr 11 bya chain 13 and to the pipe-damper 12 by a chain 14. The pipe-damper 12is provided with a lever 15, having a hook 16, to which the chain 14 ispreferably connected. The pipe-damper 12 may be held normally closed bymeans of spring 17 or weight 18. An auxiliary stovedamper 19ispreferably secured within'thc stove-damper 11 by pivot 20 and isprovided with a stop 21 to limit its upward movement, as shown in Figs.-1 and 14. This auxiliary damper permits the'gradual shutting oi of theinflow of air as the stove-damper is being closed, thus increasing thesensitiveness of f the action of the damper in closing to decrease thetemperature. It also permits of greater sensitiveness in the operationof opening the stove-damper, since it will readily open to admit a smallamount of air to the fire and allow a gradual increase in thetemperature of the stove before the stove-drum per could be raised,owing to its increased weight and the air-pressure thereon.

In order to overcome changes in temperature and varying drafts, l haveprovided the adjustable connecton between the arm 1 and level 15,consisting of the hook 16, which is adapted to engage difl'erent linksof the chain 14 to hold the pipe-damper normally open the desireddistance. 'A pointer 22 upon the gage 10 and dial 23, mounted upon thesupport 3 and having suitable characters, are provided to indicate thedesired temperature. pipe-damper 12 to assist in overcoming theair-pressure against said damper when it is being opened. The standard'7 is placed in such ositiou as not to be affected by the heat i iom thestove, or it may be protected The lever 15 is provided upon the from theaction of the heat by means of a port 3, which acting upon the pivot 4draws the free end of the arm 1 downwardly, thus permitting thestove-damper to close and the pipe-damper to open, as shown in Fig. 3.

. When the fire decreases and the stove contracts, the action of thesedampers will be reversed, and there will be a shifting of the dampers toregulate the heat, depending upon the contraction and expansion of thestove. To regulate the temperature, adjust the gage 10 up or down uponthe standard 7 the de sired distance. To increase the temperature,elevate the gage 10 by turning it tothe left upon the standard 7, whichwill cause the free end of the arm 1 to rise, thus drawing thestove-damper 11 upwardly to increase the draft and at the sametiniepermit the pipedamper 12 to move a correspondin' distance to close orpartially close it to. still urther increase the draft. To decrease thefixed tem? perature desired, lower the gage 10 by turning it to theright upon the standard 7. When the stove expands and lifts the su port,drawing the free end of the pivotei arm downwardly, the stove-damperwill close and the pipe-damper will open correspondingly and willcontinue to open still farther as lpng as the stove continues toincrease in heat.

The use of my invention secures an even and regular temperature,prevents overheating of the stove, and renders the stove more economicalin the use of .fuel by not only preventing unnecessary heating, but alsoby causing a more thorough consumption of the products of combustion.

It will be obvious that my invention is capable of some modificationwithout material departure from the scope and spirit thereof, and forthis reason I do not wish to be under- I stood as limiting myself to theprecise construction LHCLiIIRHgQIHGDt set forthas, for instance, theauxiliary damper may be omitted, if desired; but p i What I claim, anddesire to secure by Letters Patent, is

1. In an automatic stove-damper, a stove, a support mounted thereon, anarm pivoted to said support, a spring'interposed between said arm andsupport to exert'pressure upwardly against said arm, a standard securedadjacent to tlie'stove and pivotally connected to said arm, and a damperattached to the free end of said arm and adapted to be operated thereby.r

2. In an autoniatic stove-damper, a stove, an arm pivot-ally secured tothe top thereof, a fulcrum for said arm, a spring adapted to exertpressure upwardly against said arm whereby the fulcrum is maintained in.its pesition, a. standard secured adjacent ts the stove and pivotallyconnected to said arm, a stove-d amper and an auxiliary damper therein,a stop to limit the movement of said auxi iliary dam er, and means forconnecting said auxiliary amper to the free end of said arm.

3. In an automatic stove-damper, a stove, an arm pivotally secured to astove, a fnl crum for said arm, a spring adapted to exert pressureagainst said arm, a standard secured adjacent to the stoveand pivotailyconnected to saidarm, a damper having an auxiliary damper thereinattached by flexible connection to the free end of said arm and adapted.to be operated thereby.

4. In an automatic stove-damper, a stove, an arm pivotally securedthereto, a fulcrum for said arm, a spring adapted to exert ressureagainst said arm, astandard secured adjacent to the stove and pivotallyconnected to said arm, a damper attached to the free end of said arm andadapted to be operated thereby, and a weight on the inside of the damperadapted to return said damper to its normal position.

WILLIAM R. BOND. Witnesses.

JAMEs RAMsaY, CLARENCE l1. Pnnnaw.

